为防止丛式钻井碰撞事故的发生，设计了丛式钻井防碰预警系统。
For avoiding hit accident of group drilling, the group drilling defend touch yellow alert system was designed.
本文应用板壳理论，对渤海绥中36—1J区丛式井表层无钻井时间固作业方案进行了研究。
The paper, based on shell theory, studies the surface cementing operation scheme without drilling rig during cluster drilling in SZ 36 -1 J Area in Bohai Sea.
实践证明，小眼丛式井比小眼直井钻井效率高，社会效益及经济效益显著。
The applications show that the efficiency of cluster slimhole wells is higher than that of vertical slimhole wells, and that the economic benefits are remarkable.
实践证明，小眼丛式井比小眼直井钻井效率高，社会效益及经济效益显著。
The applications show that the efficiency of cluster slimhole wells is higher than that of vertical slimhole wells, and that the economic benefits are remarkable.
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